蛙下丘听觉神经元对双耳强度差检测功能的建模和仿真

建立了蛙下丘听觉神经元对双耳刺激强度差检测功能的一个数学模型。按此模型所作的计算机仿真和相应实验结果比较的一致性支持了下列假设 :下丘中的EO神经元对同侧刺激不产生反应可能是由于接受了来自同侧的强烈抑制性输入 ,从而掩盖了它同时接受到的来自同侧耳的兴奋性输入。而来自同侧的抑制性输入 ,与来自对侧的兴奋性输入可能通过突触前抑制的相互作用 ,则导致了EE神经元的双耳抑制现象。

MODELING AND SIMULATION OF INTERAURAL-LEVEL-DIFFERENCEDETECTION OF AUDITORY NEURONS IN THE INFERIOR COLLICULUS IN FROGS

A mathematical model of interaural-level-difference detection in auditory neurons in the frog inferior colliculus was established in this paper. The accordance between the simulation and experimental results supports the following hypothesis: The reason that the EO neuron does not show any response to the ipsilateral stimuli is probably that ipsilateral inhibitory input overcome the ipsilateral excitatory input. The reason that EE neuron display binaural inhibition is possibly that a presynaptic interaction occurs between inhibitory inputs from the ipsilateral side and excitatory inputs from the contraleteral side.